CVE-2025-26695
published 2025-03-10CVE-2025-26695: When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested…
PriorityP423medium5.3CVSS 3.1
AVLACLPRLUINSUCLILAL
EPSS
0.15%
4.5th percentile
When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability was fixed in Thunderbird 136 and Thunderbird 128.8.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | thunderbird | < thunderbird 1:128.8.0esr-1~deb12u1 (bookworm) | thunderbird 1:128.8.0esr-1~deb12u1 (bookworm) |
| mozilla | firefox | — | — |
| mozilla | thunderbird | < 128.8.0 | 128.8.0 |
| mozilla | thunderbird | >= 0 < 1:128.8.0esr-1~deb11u1 | 1:128.8.0esr-1~deb11u1 |
| mozilla | thunderbird | >= 0 < 1:128.8.0esr-1~deb12u1 | 1:128.8.0esr-1~deb12u1 |
| mozilla | thunderbird | >= 0 < 1:128.8.0esr-1 | 1:128.8.0esr-1 |
| mozilla | thunderbird | >= 0 < 1:128.8.0esr-1 | 1:128.8.0esr-1 |
| mozilla | thunderbird | >= 129.0 < 136.0 | 136.0 |
CVSS provenance
nvdv3.15.3MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
osv5.3MEDIUM
vendor_debian5.3MEDIUM
vendor_redhat5.3MEDIUM
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OSV
CVE-2025-26695: When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the reque
osv·2025-03-10·CVSS 5.3
CVE-2025-26695 [MEDIUM] CVE-2025-26695: When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the reque
When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8.
GHSA
GHSA-29qq-gf32-fj2m: When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the reque
ghsa_unreviewed·2025-03-10
CVE-2025-26695 [MEDIUM] GHSA-29qq-gf32-fj2m: When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the reque
When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8.
Ubuntu
Thunderbird vulnerabilities
vendor_ubuntu·2025-07-22
CVE-2025-4083 Thunderbird vulnerabilities
Title: Thunderbird vulnerabilities
Summary: Several security issues were fixed in Thunderbird.
Multiple security issues were discovered in Thunderbird. If a user were
tricked into opening a specially crafted website in a browsing context, an
attacker could potentially exploit these to cause a denial of service,
obtain sensitive information, bypass security restrictions, cross-site
tracing, or execute arbitrary code.
Instructions: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart thunderbird to
make all the necessary changes.
Red Hat
thunderbird: Downloading of OpenPGP keys from WKD used incorrect padding
vendor_redhat·2025-03-10·CVSS 5.3
CVE-2025-26695 [MEDIUM] CWE-203 thunderbird: Downloading of OpenPGP keys from WKD used incorrect padding
thunderbird: Downloading of OpenPGP keys from WKD used incorrect padding
When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8.
A flaw was found in Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: When requesting an OpenPGP key from a WKD server, an incorrect padding size was used, and a network observer could have learned the length of the requested email address.
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
Package: thunderbird (Red Hat Enterprise Linux 10) - Affected
Package: thunde
Debian
CVE-2025-26695: thunderbird - When requesting an OpenPGP key from a WKD server, an incorrect padding size was ...
vendor_debian·2025·CVSS 5.3
CVE-2025-26695 [MEDIUM] CVE-2025-26695: thunderbird - When requesting an OpenPGP key from a WKD server, an incorrect padding size was ...
When requesting an OpenPGP key from a WKD server, an incorrect padding size was used and a network observer could have learned the length of the requested email address. This vulnerability affects Thunderbird < 136 and Thunderbird < 128.8.
Scope: local
bookworm: resolved (fixed in 1:128.8.0esr-1~deb12u1)
bullseye: resolved (fixed in 1:128.8.0esr-1~deb11u1)
forky: resolved (fixed in 1:128.8.0esr-1)
sid: resolved (fixed in 1:128.8.0esr-1)
trixie: resolved (fixed in 1:128.8.0esr-1)
Mozilla
Mozilla Foundation Security Advisory 2025-18: CVE-2025-26695
vendor_mozilla·CVSS 5.3
CVE-2025-26695 [MEDIUM] Mozilla Foundation Security Advisory 2025-18: CVE-2025-26695
Mozilla Foundation Security Advisory 2025-18
CVE: CVE-2025-26695
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 128.8
Mozilla
Mozilla Foundation Security Advisory 2025-17: CVE-2025-26695
vendor_mozilla·CVSS 5.3
CVE-2025-26695 [MEDIUM] Mozilla Foundation Security Advisory 2025-17: CVE-2025-26695
Mozilla Foundation Security Advisory 2025-17
CVE: CVE-2025-26695
Product: Thunderbird
Impact: high
Fixed in: Thunderbird 136
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-03-10
Published